What does "The devil take the waltz, my only regret is for the coda—I wish that had been a success!" mean?
"The devil take the waltz, my only regret is for the coda—I wish that had been a success!", Johann Strauss II said
I don't understand what he said, and what he means to.
"The Devil take _____" is a somewhat archaic way of saying "I don't care about ____" - after all, the Devil can have it.
As for a Coda, it is the final portion of a piece of music - and in the case of the Blue Danube, the segment of which Strauss was proudest.
Judging from the idiom "The devil take the hindmost" I would say that the writer wasn't really that fond of the piece in general, but just the portion of it called the "coda".